What is the mean of these results: 8, 10, 12, 14, 16?
A student measures the height of a plant on five days: 12 cm, 15 cm, 14 cm, 16 cm, and 13 cm. Calculate the mean height.
The mean is calculated by:
What is the range of these results: 5, 7, 9, 6, 8?
How do you calculate the range of a set of results?
A student records temperatures of 12°C, 14°C, 15°C, 16°C, and 13°C. What is the mean temperature?
Why is it useful to calculate the mean of a set of results?
If one result in a set is much larger or smaller than the others, this is called:
A scientist records five measurements: 2.1 g, 2.4 g, 2.3 g, 2.2 g, and 2.5 g. Calculate the range.
What does a larger range in a data set suggest?
What is an anomaly in a scientific investigation?
An anomalous result is:
Why should scientists look for anomalies in their data?
A student records the following results: 22, 24, 21, 23, 45. Which result is likely to be an anomaly?
If an anomaly is identified, a scientist should:
How can you tell if a result is anomalous in an experiment?
Anomalies in data can be caused by:
How should a scientist handle an anomaly in their data?
A student measures the mass of five objects: 1.2 g, 1.3 g, 1.4 g, 3.5 g, and 1.3 g. Which value is an anomaly?
Why should scientists repeat their experiments?
If a scientist repeats an experiment and gets very different results each time, what does this suggest?
A scientist records results for the rate of reaction in an experiment. They repeat the experiment three times and get similar results. What does this suggest about their data?
If an experiment is repeated multiple times and the results are very similar, this means the experiment is:
Which of the following best improves the reliability of an experiment?
Why is it important to have reliable data in scientific investigations?